Soldering

Soldering

To clean flux residue, use 99% isopropyl alcohol, which is close to the anhydrous (100%) isopropyl alcohol commonly used in industry to clean PCBs.

Surface Mount
Use a lot of liquid flux and use visual magnification aids. Put some solder on a corner pad, heat the pad and place a corner lead. Tack down the opposite corner. Apply a little solder to the iron and drag it over the pins. To remove solder bridges, clean the iron of any solder and apply again across the pins or, if possible, drawing it away from the pins.